Scientists often classify organisms based on their ability to perform certain processes. Which of the following shows an example of organisms being classified based on their physiological abilities?
A.
Plant cells have cell walls.
Animal cells do not have cell walls.
B.
Protists can be unicellular or multicellular.
Bacteria are unicellular.
C.
Animals and plants have membrane-bound nuclei.
Bacteria do not have nuclei.
D.
Plants can make their own food using energy from the Sun.
Animals cannot make their own food.
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